Types of bariatric surgery and sample relative frequency of their use.
Predominantly restrictive procedures
Mixed restrictive and malabsorptive procedures
Predominantly malabsorptive procedures
Percentages from DeMaria et al, Baseline data from American Society for Metabolic and Bariatric Surgery-designated Bariatric Surgery Centers of Excellence using the Bariatric Outcomes Longitudinal Database. Surg Obes Relat Dis. 2010 Jul-Aug;6(4):347-55.
The currently commonest 4 procedures.
Diagram from the US National Institutes of Health publication No. 08-4006, updated June 2011.